import esphome.codegen as cg
import esphome.config_validation as cv
from esphome import automation
from esphome.automation import maybe_simple_id
from esphome.components import power_supply
from esphome.const import CONF_ID, CONF_INVERTED, CONF_LEVEL, CONF_MAX_POWER, \
    CONF_MIN_POWER, CONF_POWER_SUPPLY
from esphome.core import CORE, coroutine


CODEOWNERS = ['@esphome/core']
IS_PLATFORM_COMPONENT = True

BINARY_OUTPUT_SCHEMA = cv.Schema({
    cv.Optional(CONF_POWER_SUPPLY): cv.use_id(power_supply.PowerSupply),
    cv.Optional(CONF_INVERTED): cv.boolean,
})

FLOAT_OUTPUT_SCHEMA = BINARY_OUTPUT_SCHEMA.extend({
    cv.Optional(CONF_MAX_POWER): cv.percentage,
    cv.Optional(CONF_MIN_POWER): cv.percentage,
})

output_ns = cg.esphome_ns.namespace('output')
BinaryOutput = output_ns.class_('BinaryOutput')
BinaryOutputPtr = BinaryOutput.operator('ptr')
FloatOutput = output_ns.class_('FloatOutput', BinaryOutput)
FloatOutputPtr = FloatOutput.operator('ptr')

# Actions
TurnOffAction = output_ns.class_('TurnOffAction', automation.Action)
TurnOnAction = output_ns.class_('TurnOnAction', automation.Action)
SetLevelAction = output_ns.class_('SetLevelAction', automation.Action)


@coroutine
def setup_output_platform_(obj, config):
    if CONF_INVERTED in config:
        cg.add(obj.set_inverted(config[CONF_INVERTED]))
    if CONF_POWER_SUPPLY in config:
        power_supply_ = yield cg.get_variable(config[CONF_POWER_SUPPLY])
        cg.add(obj.set_power_supply(power_supply_))
    if CONF_MAX_POWER in config:
        cg.add(obj.set_max_power(config[CONF_MAX_POWER]))
    if CONF_MIN_POWER in config:
        cg.add(obj.set_min_power(config[CONF_MIN_POWER]))


@coroutine
def register_output(var, config):
    if not CORE.has_id(config[CONF_ID]):
        var = cg.Pvariable(config[CONF_ID], var)
    yield setup_output_platform_(var, config)


BINARY_OUTPUT_ACTION_SCHEMA = maybe_simple_id({
    cv.Required(CONF_ID): cv.use_id(BinaryOutput),
})


@automation.register_action('output.turn_on', TurnOnAction, BINARY_OUTPUT_ACTION_SCHEMA)
def output_turn_on_to_code(config, action_id, template_arg, args):
    paren = yield cg.get_variable(config[CONF_ID])
    yield cg.new_Pvariable(action_id, template_arg, paren)


@automation.register_action('output.turn_off', TurnOffAction, BINARY_OUTPUT_ACTION_SCHEMA)
def output_turn_off_to_code(config, action_id, template_arg, args):
    paren = yield cg.get_variable(config[CONF_ID])
    yield cg.new_Pvariable(action_id, template_arg, paren)


@automation.register_action('output.set_level', SetLevelAction, cv.Schema({
    cv.Required(CONF_ID): cv.use_id(FloatOutput),
    cv.Required(CONF_LEVEL): cv.templatable(cv.percentage),
}))
def output_set_level_to_code(config, action_id, template_arg, args):
    paren = yield cg.get_variable(config[CONF_ID])
    var = cg.new_Pvariable(action_id, template_arg, paren)
    template_ = yield cg.templatable(config[CONF_LEVEL], args, float)
    cg.add(var.set_level(template_))
    yield var


def to_code(config):
    cg.add_global(output_ns.using)
